Platen for type-writing or other machines.



'No. 666,663. Patented Jan. 29, I908;

. 'A. GRAFF. v

PLATEN FOB TYPE WRITING OR OTHER MACHINES.

(Application filed 1m.- 15, 1900.1

(No and.)

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INVEN TOR WITNESSES n1: uunms PETERS ca. PNOTO-l.

a. 666,663. Patented Ian. 29, mm. A. enun- PLATEN FOB TYPEWBITING 08' OTHER MACHINES.

m ucaion men 1m. 15, 1900.)

(No Model.) 2 Sheats-Shee t 2.

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. UNITED STATES ATENT FFICE.

ANDREW GRAFF, OF NEW YORK, N. Y.

PLATEN FOR TYPE-WRITING OR OTHER MACHINES.-

SPECIFICATION forming part of Letters Patent No. 666,663, dated Januar 29, 1901.

Application filed March 15, 1900. Serial No. 8,760. (No model.)

To all whom/ it 1mm concern:

Be it known that 1, ANDREW GRAFF, a citizen of the United States, residing at New York, (Sheepshead Bay,) in the county ,of Kings and State of New York, have invented certain new and useful Improvements in Platens for Type-Writing and other Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in platens for type-writing and printing ma-- chines; and the objects of my improvements are, first, to provide a platen that is cheap, light, and durable, and, second, a platen that will lessen and deaden sound, and thereby prevent the annoyance occasioned by the devices carrying the type striking against resonant surfaces of the wooden hollow platen now in use.

In carrying out my invention Itake a piece of very heavy sole-leather, wet it thoroughly, and then cut it into pieces of the required shape and size, as shown in Figures 1 and 7 of the drawings. The form of platen shown in Fig. 2 is the preferable one, but that shown in Fig. 6 can be made cheaper and placed upon the market at a less cost. That shown in Fig. 6 I make of disks of leather cut into the required form from the waste pieces or scrap-leather.

I attain the objects of my invention by the construction illustrated in the accompanying drawings, in which- Fig. 1 is a plan view of the blank from which one of my forms of platen is made. Fig. 2 is a perspective view of the blank rolled upon itself, riveted, and stitched. Fig. 3 is an end view of the platen shown in Fig. 2. Figs. 4 and 5 illustrate a modification. Fig.

6 illustrates another form of platen made- Fig. 7 shows one. Fig. 8 illustrates an end viewof the platen with the end metal plate re-I moved; Fig. 9, the end metal plate, and Fig.

from a number of disks. of the disks.

10 the ratchet-plate removed.

Similar letters refer to like parts through out the several views upon Sheet 1 of thedrawings, and similar letters of reference refer to like parts throughout the several views uponSheet 2 thereof.

The letter A refers to the blank from which the cylinder at is formed, and b nibs or projections upon the blank A, made integral therewith. I make a slight cut at the juncture of the nib or tag I) with the blank A, so that the said nib or tag may be easily bent at an angle to the blank.

0 represents the skived edge of the leather upon the flesh side of the blank A, and d the skived edge upon the grain or hair side of the leather blank.

erepresents wooden rivets or pegs by which the ends of the skived edges of the blank when rolled upon itself are fastened together, or the skived edges at the ends thereof may be secured together by stitches, as shown at f.

9 represents a layer or cylinder of cork; h, a layer or cylinder of felt; 2', a core or roll of cotton or fiocculent material within the layer or cylinder of felt f, and w the trunnion shown upon Sheet 2 of the drawings. The layer or cylinder of cork g I place within the leather cylinder at. The layer or cylinder of felt h I insert within the layer or cylinder of cork g, and the core of cotton 1' or other like material I push or crowd within the cylinder of felt h.

19' represents nibs or tags or small pieces of leather sewed, cemented, or otherwise secured to the inside at the outer ends of the leather cylinder a before the layers or cylinders of cork and felt and the core of cotton or like materialare inserted within the leather cylinder at.

The letter M in Fig. 6 of the drawings shows a platen made of a series of leather disks.

In Fig. 7 I have illustrated by letter m one of the series of disks which compose the platen M. (Shown in Fig. 6 of the drawings.) These disks are strung upon four metallic or wooden rods n and closely packed one against the other after either the end plate It or the ratchet-plate 1 has been first firmly secured upon the said rods n by means of clampingnuts, screws, or other fastening devices.

In the platen M, of the form shown in Fig. 6, I insert the layer or cylinder of cork g, and within the said layer or cylinder I insert a layer or cylinder of felt h, and within the ings) refers to the end metal plate secured to.

one end of the platen. (Illustrated in either of the forms upon Sheet 1 or upon Sheet 2 of the drawings.)

Z refers to the ratchet-plate fastened or secured upon the opposite end of. said platen in either of the forms shown upon Sheet 1 or Sheet 2 of the drawings.

From the construction of my platen hereini shown and described it is obvious and manivices carrying letters, characters, signs, &c.,

.fest that the noise occasioned by striking de-;

forcibly engaging my sole-leather platen will: be greatly lessened, deadened, or entirely ob-=' viated over the platens now in use, which cause sound usually distracting the attention of persons seated in rooms where they are used.

the drawings I out from asize of sole-leather the blank shown in Fig. 1 of the required shape, size, and length. I then wet the blank' thoroughly and roll it.

The edges of the blank thus cut out I skive thinly on bothf edges thereof, as shown in Fig. 1. I skive from the inside or flesh side of the leather.

One edge The other edge I skive upon the of the drawings.

The skived edges of thei blank after having been pressed into the. shape of a cylinder I lap one over the other. 1 The said entire skived edges are then coated with a strong adhesive cement.

The ends of the skived edges I then secure together by wooden pegs or rivets, or I may stitch the said edges together, as shown in Fig. 2 of-the drawings, and in this way the lapped cemented edges adhere very tightly and closely together, so that it is almost impossible to separate them. The cylinder at this stage of treatment is put into a press or die for the purpose of shaping the tube and drying the cemented joint, thus making almost a seamless tube of leather. Neither wet nor dry atmosphere,heat nor cold will in any wise effect aseparation of the joint thus made. After the blank of sole-leather has been treated as above described, bent upon itself, skived edges cemented, riveted, and stitched it is then put into a lathe and turned true and even, after which the small pieces of leather, nibs, or tags 1') (shown in Figs. 4 and 5 of the drawings) may then be secured to the ends of the cylinder,on the innersurface thereof, by either riveting, sewing, or cementing the said pieces of leather, nibs, or tags thereto. By means of the small pieces of leather, nibs, or tags b and 6 (shown in Figs. 1, 2, 3, 4, and 5) the metallic end plate and ratchet-plate are secured to the cylinder. In the cylinder shown in Fig. 2 the said end metal plates and ratchetplates are secured by means of screws or other like devices to the nibs or tags, and in the cylinder shown in Fig. 6 of the drawings the said end metal plate and ratchet-plate are secured to the cylinder shown in Fig. 6 by means of the rods n, having clampingnuts upon the ends thereof.

In finishingthe cylinders I first sandpaper them thoroughly to make them smooth and even, and this is done in a lathe, after which the cylinders are coated with acoloring preparation of any desired color, and after the cylinders are dry they are burnished with a very hot burnishing-tool, the tool being hot enough to char the leather on its surface. After the surface of leather is burned or charred the i cylinders .are once more put into a lathe and In making the platen shown in Fig. 2 of:

again sandpapered, after which they are once more burnished with a slightly-warmed burnishing-iron, which gives to the cylinders a polish, and they are then ready for use.

What I claim as my invention, and desire to secure by Letters Patent, is

1. As an article of manufacture, a platen comprising a blank having attaching nibs or tags and a core. a

2. As an article of manufacture a platen comprising a blank having integral attaching nibs or tags and a core.

3. A platen provided witha leather exterior, a cotton interior and felt and cork respectively over the latter, and clamping devices for the platen.

4. Aplatenprovided withaleather cylinder having nibs or tags, a core of cotton and cylinders of felt .and cork respectively, over the core,clamping-plates connected with said nibs or tags and trunnions to support the platen.

5. A platen .provided with attaching nibs or tags,cylinders of cork and felt respectively, a core of cotton, clamping-plates connected with said tags or nibs and supporting-trunnions.

6. Theprocess herein described of making platens for type-writing and printing machines consisting in cutting out the blank of sole-leather, skiving the edges thereof, rolling it upon itself to form a cylinder, riveting, stitching and cementing the skived edges of the blank, drying the cylinder, chairing the surface thereof, smoothing the charred surface and burnishing and polishing the same.

In testimony whereof I have hereunto affixed my signature in presence of two witnesses.

ANDREW GRAFF.

Witnesses:

HENRY V. FINLAY, M. L. SHAY. 

